Sears (via 1saleaday) has the Planet Earth: The Complete BBC Series 4-Disc Blu-Ray Set for a low $24.99 Free Shipping. Tax in FL. This is $10 less than the next reputable vendor and tied for the lowest price we have seen.

We prefer the BBC version of Planet Earth over the Discovery version, primarily because David Attenborough is a far more engaging narrator than Sigourney Weaver.